#!/usr/bin/node

const user = {
  name:'wangding',
  age:43, 
  qq:'862494272'
};

const log = console.log;

log('name: %s',user.name);
log('age:  %d',user.age);
log('user: %j',user);

log('qq: %s',user.qq);
log('qq:',user.qq);
log('qq: '+user.qq);
log(`qq: ${user.qq}`);
